Injector



(Model.)

J. JENKS'z T. J. HART.

INJBGTOR.

NO. 342,604. w Patented May 25, 1886.A

N. versus, mmmmgnpher. wzxmnm. D. c.

. UNITED STATES JAMES JENKS AND THOMAS J. HRT, OF DETROIT, MIOHIGA.

INJECTO R.

SPECIPICATION forming part of Letters Patent No. 342,604, dated May 25, 1886.

Application filcd April 29, 1885. Serial No. 163.792.

This invention relates to a new and useful im- 'provement in injectors such as are corninonly used for feeding water to steam-boilers, but may also be employed for analogous purposes.

The object of our invention is to produce a simple, compact, durable, and efficient apparatus composed of few and simple parts, which may be removed from the apparatus for the -purpose of examining and cleaning without distnrbing any steamor'water connection, and which may be adj usted to work to the right or left. A further object is to accurately control the quantity of the incoming water, so as to produce the least waste of steam and water, and also to gain certainty and rapidity ofaction by providing ainple overfiow-ports for the excess of water with such' dire'ct and independent passages to the waste-pipe as to prevent any circulation of such cxeess between the overflow-ports. To accoinplish all this we have devised certain novel and useful improvements in the construction, arrangement, and combinations of old and new parts,all as hereinafter described and set forth.

In the drawings which accompany this specification, Figure 1 is a Vertical central longitudiual section of our improved injector. Fig. 2 is a cross-section onlin'e x a' in Fig. 1. Fig. 3 is a cross-section on line z z in Fig. 1. Fig. 4 is a horizontal section on line y y in Fig. 1.

A is the shell or main body of the apparatus, preferably made of brass and cast in one piece.

B is the inlet for the steam. O is the inlet for the water.l D is the outlet for the water to the boiler; and E is the outlet for the overfiow, all these inlets or outlets being arran'ged to be coupled in the usual manner to the necessary pipe-connections.

F is ascrew-cap closing one end of the shell, and G is another screw-cap closing the oppo- (Model.)

and in direct axial line'with each other, all the different tubes or nozzles are secured to suitable seats formed within theshell in such manner that they may all be withdrawn through one or the other end of the shell after removing the caps. 4

H is a plug secured in the shell and provided with a central opening,` in which the steamnozzle I is secured. The latterv has an opening, a, through which the steam is admitted into it from the steam-inlet B.

J is the suction-tube, secured in the shell. It is placedin the usual relation to the steamnozzle I and suctionipipe O. i

K is the combining-tube, and L is the delivery-tube. These two tubes are preferably formed as integral parts of the hollow plug M, which is cut away at b Z) and largely cut away at 0 c where necessary to permit the free passage of water. The tube K is provided with a shoulder, d, which is seated against the diaphragni N in the shell, and ascrew-seat, e, in the shell secures the plug M in place. O' is an overl'lowchamber, into which the excess of water escapes. This chamber is formed by that portion of the shell between the tubes J and L and by an upward extension, P, of the shell, which is provided with a screw-cap, R, and opens into the overfiowpipe E.

The diaphragxn N separates the chambers O and O', and the gravity-valve S prevents any back flow of water from the Chamber O into the Chamber O'. By 'this arrangement ample and direct exits for the excess of water are provided into the overfiow, and the valve V closes the water-opening of the overflow and preveuts the indraft of air. The valve S is guided upon its seat by a spider, T, and can be readily removed, if necessary, by unscrewing the cap R.

The overflow E is controlled by a checkvalve, U, which opens outwardly to permit ,the escape of water, and closes to prevent the inlet of air. This check-valve may be conveniently combined with an elbow to direct the overflow in a downward direction.

To regulate the quantity of the incoming water the following arrangement is provided: The plug H is provided at one end with a screw-threaded section, m, and a movable nozzle, n, provided with a corresponding thread to engage with it iu the manner of a screwnut, is fitted over it and loosely fitted over the projecting end of the steam-nozzle, and is provided with a pinion, V. V is a worm-screw adapted to eng-age with the teeth of the pinion and ro'tate it. It is provided with a stem which project-s through the casing, and has a hand-wheel for Operating it. This screw is secured in an upward extension, p, of the shell. Its stem is stepped at one end into the screwplug 7' and passed through a stuffing-box, t, at the other end. The screw-plng i' and stuffing-box tare interchangeable, so as to allow of the screw being adjusted tobe operated either from the` right or from the left, as circumstances may require. It will he seen that this mode of regulating the admission of water is far preferable to the use of an adjnstable steam or suction tube` which must be loose in its seat, and is therefore always liable to stick or be leaky.

In practice, all there is to do to operate the injeetor is to turn on the steam, and if the necessary conditions for its operation are gi vcn it Will begin to raise and force the water into the boiler almost simultaneously. `There may be at the start some overtlow, but not necessarily. Should such overflow appear and continue it is an indicat-ion that too much water is admitted. This is then easil,r regulated by a proper turn of the hand-wheel w, which is made to approach the pinion V nearer the shction-tube, and thereby cut off the water.

We are aware that it is not new to divide the overfloW-chamber by a diaphragm surrounding the combining-tuhe, as this is shown in the patent of A. Friedman, No. 213.648, and others, and we therefore do not claim this as our invention.

What we claixn as our inventon is-.

1. In an injector, the shell A, having its opposite ends closed by removable screw-eaps, and having proper steam and water connections, in combination' with the tubes I J K L, axially and removably secured within said shell, substantially as and for the purposes described.

2. In an injeotor, the shell A, having proper steam and water connections, in combination with the steam-tube I. and plug` H, the plug H forming a wall between the water and steam inlets, and having a central orifiee through which the steam-tube I passes, said plug H and steam-tube I, when secured iu position, being fixed and not adj ustable. substantially as and for the purposes specified.

3. In an injector, the shell A, having proper steam and Water connections, in combination with the steam-tube I, plug H, and adjustable nozzle n, the said plug being fitted to i receive said nozzle n,and having a central orifice through which the steam-jet tube I passes,

`the plug H and steam-jet tube I, when in position, being fixed and not adjustable, andthe nozzle n being adjustable independently of said plug and tube, substantially as and for the purpose described.

4. In an injector,in combination with asteamjet tube stationarily secured in position, a plug, H, through which the steam' jet tube passes and an extension-nozzle lnovably secured upon the plug H to formV an adjustable cut-off for regulating the inflow of water into the suc` tion-tube, substantially as described.

5. In au injector substantially as described, the combination, with the eXtension-nozzle n, of an Operating-Stein, as W, held in interchangeable bearings, as set forth.

6. The combination, in an `injector as described, with the extension-nozzle n, of an operating-stem reversibly secured in position by means of the-interchangeable plug r,and stuffing-hox t, as set forth.

7. In an injector, the shell A, having proper steam and water connections, in combination with steam-tube I and plug H, said plug being th readed to receive the internal threaded nozzle, n, and the means described for operating the same, substantially as set forth.

8. [n an injector, the combination, of the steam-jet tube I, plug H,provided with screwthreads m, and extension-nozzle 11/, engaging therewith. and a gear for Operating the extensiou-nozzle, all arranged substantially as described.

9. In an injecfor, in combination with the screw-nozzle n and pinion V, the worm W, reversibly secured in position by means of the interchangeable plug r,and stuffing-box` t, substantially as described. i

10. In au injector, the combination of the plug H, provided with screw-threaded neck m, the screw-uozzle n engaging thereon and provided with pinion V, the worm W, reversibly secured in position by iuterchange'able plug v and stufing-box t, and the hand-wheel w, all arranged and Operating in connection with the steainjet tube, substautially as desoribed.

11. In au injector substautially as described, the combination, with the shell A, having diaphragm N to divide the interior of the shell into chambers O O', the diaphragm supporting the combiniug-tube and forming a seat for a gravity-valve, S, the said oomhining-tube and valve, and a Controlled overtlow-outlet, all arranged and serving as .and for the purposes set forth.

12. In au injector, the combination of the overflow-ehainber O, having lateral outlet E, terminating in a valve-seat, the hood U', secured over said Outlet, and provided with the check-valve U, all arranged substantially as described.

JAMES JENKS. THOS. J. HART.

NVitnesses:

H. S. SPRAGUE, CHARLES J. HUNT.

IIO 

